I've had the gbody parts aluminum one since sometime in 2007. Ran it today around town in traffic with the A/C on in 82F weather and its 165F. Drove it 1000 miles last year to Reynolds, 155F at 80 mph. Sitting 10-15 minutes at a drive thru in the summer in 95F heat, it gets up to 178F. I use the stock fan.